During the last decade the mobile computers such as tablets and smartphones conquered the world and at the moment the life without them is unthinkable. The development of mobile applications opened a lot of new opportunities also for scientists and we may say without hesitations that the mobile computers with their varied apps became the Swiss knives of the researchers. Four GIS-based applications used during archaeological surface surveys in Yambol province. They are TRAP Grid Survey, TRAP Burial mounds, Locus Map and UTM Geo MAP. Those are used on different portable devices using the Android OS. The apps transform any mobile computer in fully-active GPS with different types of topographic and virtual maps. They permit fast and easy collection and redaction of different geospatial data. The mobile applications permit to every registered point to add notes, drawings, photos, video clips, and audio records. Data collected during the archaeological surface surveys can be easily exported in different formats suitable for GIS-programs and digital databases. The modern cloud-systems permit easy, fast and safe sharing of the geospatial data with other users. By this way the created data-base is accessible for everyone and permits forward researches. The development of computer technologies, especially mobile GIS applications in the last decade, allows us to record both the precise position of archaeological sites as well as the status of these sites. Systematic documentation in combination with precise geolocation of archaeological sites is essential for culture heritage protection during development and infrastructure projects.